| 摘要 |
<p>Methods and compositions for reducing the maximum reactivity of exhaust products emitted by spark-ignition internal combustion engines. Gasoline having a minimum target octane number is formed by blending together base fuel blendi ng components and at least one cyclopentadienyl manganese tricarbonyl compound in an amount equivalent to up to 1/32 gram of manganese per gallon. The mangane se compound is used in lieu of an amount of one or more aromatic gasoline hydro - carbons required to achieve the same target octane number so that the maximu m reactivity of the tailpipe exhaust products produced by the manganese- containing gasoline is less than the maximum reactivity of the tailpipe exhaust product s produced by the same base fuel blending components not containing any such m an- ganese compound but containing in lieu thereof an amount of one or more aromatic gasoline hydrocarbons required to achieve the same target octane number. The re is thus provided a way of providing and using gasolines of suitable octane values while concomitantly reducing the potential for ground ozone formation, smog formation, and other grievous consequences of atmospheric pollution.</p> |
